diff --git a/sample/http-server.c b/sample/http-server.c
index e4df3efa..63e434d0 100644
--- a/sample/http-server.c
+++ b/sample/http-server.c
@@ -247,7 +247,7 @@ send_document_cb(struct evhttp_request *req, void *arg)
 			    "    <li><a href=\"%s\">%s</a>\n",
 			    name, name);/* XXX escape this */
 #ifdef WIN32
-		} while (FindNextFile(d, &ent));
+		} while (FindNextFileA(d, &ent));
 #else
 		}
 #endif